UFC Fight Night: Allen vs. Costa
| Sport: | MMA |
| Promotion: | UFC |
| Date: | May 16, 2026 |
| Venue: | UFC Apex |
| City: | Enterprise, Nevada |
| Broadcast: | Paramount+ |
Main Event
Featherweight Arnold Allen def. Melquizael Costa
Decision (unanimous) () at 5:00 of Round 5
Co-Main Event
Featherweight Choi Doo-ho def. Daniel Santos
TKO (punches) () at 4:29 of Round 2